Method for Position and/or Speed Control of a Linear Drive
AssigneeWittmann Kunststoffgeraete GmbH
InventorTomas Kalender
Life of this patent
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Abstract
The invention relates to a method and a circuit layout for the position and/or speed control of a linear drive, in particular a servo drive for a linear robot. An electric motor is supplied via a converter (3) with a control unit (4) and the motor position is determined, in particular in a sensor-free manner or via a position sensor (7). This motor position signal and an acceleration signal generated via an accelerometer (5) provided in the control unit (4) and arranged on the moving part of the linear drive are mathematically converted to a speed signal. This speed signal is used for controlling the drive. The accelerometer (5) is embodied as a microelectromechanical system (MEMS) and integrated into the entrained control unit (4).
Claims6
Method for the position and/or speed control of a linear drive, in particular of a servo drive for a linear robot, an electric motor being supplied via a converter with a control unit is characterized in that the motor position is determined in a sensor-free manner and this motor position signal and an acceleration signal generated via an MEMS accelerometer (5) provided in the control unit (4) and arranged on the moving part of the linear drive, are mathematically converted to a speed signal, and that this speed signal is used for controlling the drive.
Dependencies are inferred from the claim text.